Deep Sky Object in Winter
Around IC426 (Reflection Nebula in Orion)
Click on image to enlarge
| Date & Time: | Dec 24 2022, from 21:59 to 22:50 JST(+0900) |
| Composed 11 shots with 5 minutes exposed |
| Optical: | APM ZTA152 15cm(6.0") refractor with a conversion lens (f=850mm, F5.6) |
| with BaaderPlanetarium Moon&Skyglow filter |
| Auto-guided with Losmandy G11 (Gemini2) Equatorial & ASI183MC+PHD2 |
| Digital Camera: | Canon EOS 6D (Remodeled) |
| Location: | Ooizumi, Hokuto city, Yamanashi pref. |
| Camera Settings: | Recording format...14bit CCD-RAW, converted to 16bit TIFF(5472×3648) |
| Sensitivity...ISO1600 |
This shot has captured a star field just 1 degree east of Mintaka, the western star of Orion's belt.
You can see some of dimmed reflection nebulae here.
A round one in central slightly left is IC426, and you can see IC423 in lower right hand side.
Another small one just north of IC423 has a number of IC424.
Both IC426 and IC423 have apparent diameter of about 5 arc minutes, only telephoto lenses can take those.
This star field is about central region of the Orion Association that is rich in inter-stellar gaseous matter.
Those reflection nebulae are reflecting bright light of stars of Orion's belt.
If those nebulosities were positioned closer to bright stars,
we could appreciate them as colorful diffused nebulae like the Great Orion Nebula or the Horse head Nebula.
This image has been cropped with an equivalent focal length of 1000mm.
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| IC423 / Reflection Nebula, type 2 R |
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| R.A. | 05h 33m 24.0s (2000.0) |
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| Dec. | -00°37' 00" (2000.0) |
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| Apparent Size | 6.0' |
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| Real Size | 2.6 light yrs. |
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| Magnitude | - |
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| Distance | 1500 light yrs. |
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| Other IDs | LBN913 |
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|
| IC424 / Reflection Nebula, type R |
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| R.A. | 05h 33m 42.0s (2000.0) |
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| Dec. | -00°19' 00" (2000.0) |
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| Apparent Size | 2.0' |
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| Real Size | 0.9 light yrs. |
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| Magnitude | - |
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| Distance | 1500 light yrs. |
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|
| IC426 / Reflection Nebula, type 2 R |
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| R.A. | 05h 36m 48.0s (2000.0) |
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| Dec. | -00°15' 00" (2000.0) |
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| Apparent Size | 5.0' |
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| Real Size | 2.2 light yrs. |
|---|
| Magnitude | - |
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| Distance | 1500 light yrs. |
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| Other IDs | LBN921 |
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